Xerneas and Yveltal are two legendary Pokémon species in Nintendo and Game Freak's Pokémon franchise, debuting as the version mascots in the 2013 Nintendo 3DS games Pokémon X and Y. Both creatures were jointly designed by Ken Sugimori and Atsuko Nishida over a period of 18 months. Their designs draw inspiration from Norse mythology and are based on the shapes "X" and "Y". Known as the Life and Destruction Pokémon, respectively, Xerneas and Yveltal are powerful creatures said to have shaped the history of the Pokémon world. Xerneas and Yveltal appeared in many other games and media since their debut.
